You could google this it would help you alot all you need to do is get the list of the devices they have read the passage and find what fits best
here is a list of devices
http://examples.yourdictionary.com/examples-of-rhetorical-devices.html
National Police Week (NPW) held May 11 – 17 each year in Washington, D.C. honors the service and sacrifice of U.S. law enforcement officers. On May 11 and 12, surviving families and co-workers begin arriving in Washington, D.C. for the events.
The tone or pitch of the voice ; the modulation of the voice.
A, a subordinating conjunction is used in this sentence.